Labels:text | screenshot | black | black and white | font OCR: tration Measurement of the blood glucose conc eals after an overnight fast almost always re rmed on at hypoglycaemia, providing that it is perf cted cases, least three occasions (Fig. 20.11), In susp (collected glucose determinations of capillary bloo sured in a on filter paper during an attack and me laboratory) are very informative.